Rock-drilling machine



(No Model.)

H. B. UTTER.

BOOK DRILLING MACHINE.

Patented Sept. 1'7, 1889.

' Mme/4i: l g Q 0/6 flew 7 UNITED STATES PATENT OFFICE.

HORACE B. UTTER, OF ROCKFORD, ILLINOIS.

ROCK-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 411,078, datedSeptember 17, 1889.

Application filed January 28, 1889. Serial No. 297,860. (No model.)

To all whom it may concern.-

Be it known that I, HORACE B. UTTER, a citizen of the United States,residing at Rockford, in the county of Winnebago and State of Illinois,have invented certain new and useful Improvements in Well-DrillingMachines, of which the following is a specification.

The object of this invention is to construct an esoapement mechanism bymeans of which the workings of the drill after being lowered may beregulated.

In the accompanying drawings, Figure l is an isometrical representationof a portion of a drilling-machine with parts broken away to moreclearly show my improvements. Fig. 2 shows a drill with a section ofrope.

The frame of the drilling-machine is substantially the same as the frameheretofore in use, consisting of the bottom sills 1 and 2, connected bycross-sills 3, vertical posts 4, supporting the top frame composed ofthe lengthwise beams 5 and cross-beams 6. Inclined posts 7 also serve assupports for the top frame.

A horizontal shaft 8 is supported in bearings 9 upon the lower sills 1and 2 of the frame. On each side of the bearings, mounted upon sills 2,are two ratchet-wheels 10 and 11, connected with the shaft 8, and movingtherewith.

A treadle 12 has a pivotal connection with the shaft 8 by means of thebrace-arms 13. About midway of the length of the treadle is secured asheave 14 by the supports 15 on each side of the sheave.

A rope or chain 15% is secured at one end to the shaft 8, and is woundthereon. Its free end passes under the sheave 14, and connects with thedrill in the usual manner.

A pallet 16 has a pivotal connection with the main frame. The ends ofthe pallet engage the teeth of the ratchet-toothed wheel 10. A lever 17is connected with the pallet, by means of which the wheel 10 can beoperated.

A spring 18 is connected at one end with the lever 17, and its other endwith the main frame. The action of this spring is to hold one end of thepallet in engagement with the teeth of the wheel 10, thereby preventingthe unwinding of the rope or chain from the shaft 8.

By an up and down movement of the lever 17, carrying the pallet 16 withit, the ends of the pallet will alternately engage the teeth of thewheel 10, causing it to move step by step in the direction indicated bythe arrow, and consequently paying out the rope or chain to lower thedrill as may berequired.

A lever 19 has a pivotal connection around the shaft 8. This levercarries a pawl 20, which engages the teeth of wheel 11. By means of thislever and the pawl engaging the teeth of the wheel 11 the drill may beraised by winding the rope or chain upon the shaft 8, and the pallet 16will act as a dog, preventing the unwinding of the rope.

The object of the escapement in connection with the take-up device is toproperly adjust the drill to its best working depth after the drill hasbeen lowered.

A shaft 21 is supported to revolve in bear ings 22.

A pulley 23 is secured to the shaft outside of the main frame. Motion isimparted to this pulley by a belt or other means connecting it with aprime mover.

The cam used for operating the treadle is mounted on the shaft 21, andrevolves therewith, and consists of a hub 24, parallel arms 25,radiating from the hub, and rollers 26, held in place between theparallel arms by bolts 29.

I claim as my invention 1. In a drilling-machine, the combination, withadrilling attachment, of a lowering device to said attachment,consisting of a ratchetwheel, a pallet, an operating-handle attached tothe pallet, and a spring connected with the pallet, the tension of thespring tending to hold the operating-handle raised and the advancedtooth of the pallet in engagement with the ratchet-wheel, substantiallyas set forth.

2. In a drilling-machine, the combination, with the main frame, of arope-shaft journaled therein, two ratchet-wheels keyed to therope-shaft, a ratchet-lever for engaging one of said ratchet-wheels towind the rope about the shaft, a pallet engaging the other ratchet-wheelfor letting out rope, and provided with an operating-handle, anoperating-lever pivoted about said shaft, a sheave engaged with saidlever, a rope wound about the rope-shaft, passed around the sheave, andprovided with a drilling-tool, a main driveshaft journaled in theopposite end of said main frame, and a cam upon said shaft fordepressing the said operating-lever, substantially as set forth.

HORACE B. UTJER. Witnesses:

S. A. D. BEHEL, A. O. BEHEL.

